Cutting-machine.



C. W. HOTTMANN.

CUTTING MACHINE. APPLICATION FILED NOV. 7, 1916.

Patented Aug. 21, 1917.

4 SHEETS-SHEET I.

, INVENTOR ATTORNEYS WITNESSES C. W. HOTTMANN.

CUTTING MACHINE.

APPLICATION FILED NOV. 7. 1916. L%7,907. Patented Aug. 21, 1917.

4 SHEETS-SHEET 2- C. W. HOTTMANN.

Y CUTTING MACHINE.

APPLXCATION FILED NOV. 7. 19I6.

7 g Patented Aug. 21, 1917.

4 SHEETS-SHEET s.

- 'mvE Hum! WITNESSES On [line 8--6 C. W. HOTTMANN.

CUTTING MACHINE.

APPLICATION FILED Nov. 1, 191a.

LQWQQQW. v Patented Aug. 21, 1917'.v

4 SHEETSSHEET 4- \11 imo 9] On line /5 -/.5 1 4:7,

H cow? v ATTORNEYS- To all whom it may concern:

imirED STATES PATENT OFFICE.

CHARLES W. I-IOTTlVIANN, OF PHILADELPHIA, PENNSYLVANIA. I

I CUTTING-MACHINE.

Be it known that I, CHARLES W. Horr- MANN, a citizen of the United States, residing in the city andcounty of Philadelphia,

State of Pennsylvania, have invented a new and useful Cutting-Machine, of which the following is a specification.

In cutting :machines as heretofore constructed considerable difficulty has arisen in maintaining the machine in a sanitary condition and in constructing 1t 1n such'a manfner that different parts, such for example a. If

as the feeding mechanism and the cutting mechanism, may be readily and quickly removed without necessitating the disman tling of the entiremachine.

In my prior Patent #1917213, dated February 18th, 1912, I have described and broadly claimed a novel construction of a cutting machine wherein the material which is being cut is "continuously fed to and from the cutting mechanism until it hasbeen reduced to a desired degree of fineness and in my present invention the cycle ofthe operation is. somewhat similar to that of my .priorpatent but includes a novel construction and arrangement of the parts whereby improved results are obtained.

Withithe above in view my invention consists of a novel construction of acutting machine whereinlnovel means are employed to effect the feed of the material and wherein a novel construction and arrangement of cutting mechanism is employed.

Itfurther consists of a novel construction and arrangement of a discharge outlet and means tocontrolsuch outlet. 1 a

It further consists of a novel construction of a casing adapted to receive material-feeding and cutting mechanism and novel means for rendering thecutting mechanism accessible when itis desired toremove or change the cutting mechanism. I

It further consists of a novel construction of cutters and novel means for securing them in position. i

It further consists of novel; driving mechanism which is constructed in such a manner that the feed conveyers are actuated at the proper speed with respect to the rotating cutters. l

Other numerous novel features of construction and advantage will hereinafter appear in the detailed description of the invention. p a

For the purpose of illustrating my inven- Specifieation of Letters Patent; Patented Aug, 21, 1917; Application filed November 7, 1916. Serial No. 130,098.

tion I have shown in the accompanying drawings a typical embodiment of 3t which is at present preferred by me since it has been found in practice to give satisfactory and reliable results. It is, however, to be understood that this embodiment is typical only and that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of these instru- A mentalities as herein set forth.

, Figurel represents in side elevation and partlyin section a cutting machine embodying my invention.

Fig. 2 represents in perspective and in detached position a comb or stripper seen in Fig. 1.

, Fig. 3 represents a side elevation of one of the cutter blades in detached position.

Fig. 4 represents a top plan View of my machine.

. Fig. 5 represents asection on line 55 of Fig. 1.

Fig.6 represents a section on line 66 of Fig. 1.

a section on line 9-9 Fig. 11 represents anend elevation of a portion of the machine.

Fig. 12 represents an end elevation of a portion of the machine showing a portion of a door in open position to more clearly illustrate certain parts of the cutting mechanism.

Fig. 13 represents a vertical section showing certain parts of thecutting mechanism on an enlarged scale.

Fig. 14 represents a section on line 1414 J i of Fig. 13. I

Fig. 15 represents a section on line 1515 of Fig. 18.

. Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings, 1 designates the base frame-work of the machine which supports a casing 2 preferably constructed of sheet metal although it may be a casting. This casing embodies two parallel feed channels or chambers 7 and 8, each as to" its bottom portion semi-cylin drical, and both divided by a central up wardly-extending rib or web which as shown in. Figs. 8 and 10 is almost as high as the outer side walls of the casing. The casing may if desiredbe inclosed by a lid. In the construction represented itis opentopped. 1 I v I 4 9 designatesamaindriving shaft'wlnch -is'dr1ve11-by means ofany'deslred source of power'an'd is journaled in brackets 1'0 at the ends of the frame-Work. 11 is a pinion fiXed up'on' the otiter end of the shaft 9 which meshes with a gear '12 fixed upon a stud shaft '13 mounted within the gear casing 30. A pinion14 meshes with a gear 15 inner ends are each provided with a boss 21 from which're'spectively project theop p o'sit'ely extended hooks 22 and 23 which are convenient means for detachably iconnectin'g with their respective shafts 1 6. and

" 20 the inturned ends 27 and 28 of the spiral conveyingblades 24 and-25. 'The opposite ends 'of the feed conveyers bear withoutdirect connection ag-amathe' outer ends of the channels within which they operate.

The feed conveyer 24 is constructed and driven in such a -manner that it causesflthe feed ofthe niateri'altoward the rear end of the machine or in the direction 'of the arrow seenin the feed channel '7 in Fig. 4.

" The feed conveyer 25, upon the other hand,

is located'in the/feed channel 8,i and constructed and arranged in such a manner'to effect the feed of the material"toward the forward end of the machine in the direction of the arrow shown in feed channel 8.

'" The feed conveyer 24 consists "of a pref erably flat strip of material of spiral "or helical formation, having a relatively flattened portion at its rear end, as indicated at26, and provided with an inturned end 27 which i'sada'pted to 'interlock'fbetween the hooks 22 and 23 on the boss of the shaft 16. The feeding and conveying blade 25 isjconstructed in a manner similar toconveyer 24 except that the flattened portion [26 is omitted. Its inturned end 28 interlocks between the hooks '22 "and- 23 on'the shaft 20. The channels 7 'and 8 areinclos'e'dat their reanendsand 'atthei'r. forward ends communicatethroug'h an aperture 63 with the cuttingchamber 29.

The gearing which operates theshafts of the conveying blades and which is operated from the driving shaft 9 is incased in any preferred form of gear casing 30, the lid 31 of .which permits of access to the gears. This gear casing forms an inclosure forthe rear end of the channels 7 and 8 of the conveyer' blades.

A At their forward ends the feed channels 7 and 8, communicate with a cutting chamber 29 of any preferred form, within which the cutting blades 33, 34-, 35 and 36 are contained andoperate. At its outer end the casing 2 has formed or applied within it, preferably hingedly as shown, a guide plate 37 which extends completely across it and serves to direct the material to be operated upon into and out of the cutting chamber. In the construction represented, I have illustrated a group of four cutting blades each of the character shown in Fig. 3, preferably all alike and curved or 'scinii-tarshaped as' to their cutting edges. This group or plurality of cutting blades is connected with the front end of the main driving shaft 9 preferably by the following means A bossor-head '38 is removably connected by a pin 38 with the main drive shaft 9, preferably beyond a bearing 39 in the front end of the frame work of the machine. From the front face of this head protrudes forwardly what I term a boss pin 40 and a pair of blade-retaining pins 41 and 42 all of which pass completely through a spacing collar 43, Fig. 13, and through a plurality of spacing rings 44, 4'5, 46 respectively formed with lugs 44*, Fig. 15,"and through a retaining cap-47,and the-pins also pass through notches 48 within the periphery of an aperture 49 in the cutting blades, as

shown in Fig. '3." I

The boss pin 40 is bored at 50' to fit over a centering knob 51 on the shaft-9, as shown in Fig. 13. The front ends of the retaining pins are threaded, and nuts 52 and-:53 upon them serve to compres's'the retaining cap 47, the assembled blades 33 to 36, the assembled spacing rings 44 to 46, and the spacing collar 43, all against the boss ,38, to form a compact multiple-bladed cutting'mechanism bore a locking pin 57 Figs. 12 and l3,'which has a handle head 58,'by which it may be -adapted to be rotated within the cutting turned withinits bore, preferably with respect to stops 59, 60 and 61, on the retaining cap 47. [This entire device is merely a key to effectually retain. the bladesin position.

w lt will be apparentthat this bladed cutting mechanism asJWell as the stripper can aperture 63, asshown in Fig. 1. The door 62 is swung upon hingearms 65,66 mounted upon a hinge pin 67 at the rear of the casing and side of the cutting chamber.

Protruding centrally ,from and affixed to a a bulge in thefront face of this doorisa pivot pin 68 upon which is mounted a ro tatable lever-lockingdisk 69, which in the construction shown. is formed with a plu: rality of diametricallybpposite, outwardlyopening sockets 7 0, Fig. 6, within which are entered the rounded'inner'ends 71 of a group of locking levers 72fulcrumed at 73, against the outer face of, the door. At its outer .end each of these locking levers is adaptedto enter within an internallyrtapering seat 74:

. attached to the frame-work of the machine just exteriorly 0f the outer. periphery of thedoor which the construction shown is circular. c H 1 a Rad'ally projecting from the rotatable disk 69 the rotary movement of WhlClllS limited by a stoplpin 75 on the door which protrudes within a segmental slot:7 6 on the disk, is a handle 77 by means of which such rotation of the disk maybeimparted'toit as will occasion'the simultaneous throw of the group of levers to cause them to be entered within or moved out of the tapering seats 74, with the resultof tightly locking orunlocking the door. s Near the inner end ofthe casing, and in the construction shown formed through the outer curved wall of the returning feed channel 7, is a discharge opening or outlet 78, Figs. 1, 4. and 5, from which extends a a discharge spout .79, Fig. 5.

I 80 designates a swinging-- doorphingedly supported above the discharge opening 78, exteriorly of the casing, on a swing pin 81 preferably mounted between the side :Walls 82 of the discharge spout 7 9.; Normallythis door is retained in its closed position shown in Fig. 5, by a spring-controlled knucklej chit-connection composed of a lifting handle 83 pivoted at 84 conveniently between the i 7 i side want 82' or the Spent 79, and which is connected by the connecting pin 8 5 to] a socket 86 within which is entered theouter end ofga rod ,87 which at its lower end is connected with a-pivot head 88 the pivot ofwhich 89 is conveniently connected with the side walls 90 of the door 80.. A 91 is. a spiral spring encircling the rod 87 between thesocket 86 and the pivot head 88, and compressed when the door is closed.

92 is a link between the pivot socket 86 and the door 80, which connects the door to the handle in such manner that in the outward pull of the handle the door will be swung outward. I

The foregoing contrivance, as will be readily understood, serves, when the handle is pulled outwardly and the spring released, to permit of the swinging or opening of the door, and, when the handle is moved inwardly and the spring compressed, serves to insure, the retention of the door in closed position. ThewdiSposition or location of the. discharge opening and spout at the rear of the casing and return feed channel makes it possible,-after the machine has been operated for a period long enough to insure the complete mixingand cutting of the material to be operated upon,to effect the complete expulsionofsuch material while the machine is still operating. This is most important and a result that has heretofore not been accomplished in machines of this general character.

From the foregoing description, the operationof the machine will have been understood. r

In addition to the fact that the location of the discharge opening at the rear end of the feed channel? through which thematerial moves backward in the direction of the arrow. upon said channel in Fig. 4, makes it possible to thoroughly expel the mixed material without stopping the machine, it is of importance that the opening 6 between the feed channels should be located at the front end of the machine or at that end which is distant from the cutting mechanism and near, to the discharge opening. i

. It will now be apparent that I have devised a novel and useful construction of a cutting machine which embodies the features of advantage enumerated as desirablein the statement of the invention and the above descriptiomand while Ihave, in the present instance, shown and described a preferred embodimentthereof which will be found in practice to give satisfactory and reliableresults, it is to, be understood that the same is susceptible of modification in. various particulars without departing from the spirit or scope ofthe invention or sacrificing any of its. advantages.

Having thus described my invention, what I claim asnew and desire to-secure by Letters Patent,is: I

1. A cutting machine, which comprises in c'ombinationt-a casing formed with two parallel feed channels communicating with each other,a hollow spiralconvcying blade in each of said channels,'mechani'sm' for imparting reverse rotation to saidconveying' blades,'a cutting chamber into which the 'feed channels open,'and rotary cutting blades within said cutting chamber.

2. A cutting machine, which comprises in combination :'a casing formedwith two parallelfeed channels the bottoms of which are cylindric and which communicate with each other atfcne end,a hollow spirally formed conveying blade in each of said. channels, which conforms to the cylindric bottom ofthe channel,mechanism 'for im parting reverse rotation within the channels to said conveying blades,a cutting chamber at one end of said channels into which they both open,-rotary "cutting blades'within said cutting-chamber,and

a stripper within said chamber with which said blades coeperate. 1

8.- A cutting machine, which comprises in each 'other,"a continuously spiral hollow conveying'blade in one of said channels,' a spirally formed hollow conveying blade having a flattened portion'at its discharging 'cndin the other or said channels,mechanism for impartingreverse rotation'to both blades 'vvithin' their respective channe1s,-ya cutting chamber at one end of said channels into which they both open,rotary fcuttin'g blades withinsaid cutting chamber,-''and a stripper within" said chamber with which said blades cooperate.

5. A'cutting machine, which comprises in combination casing formed with two p'ara'lletfeed channels communicating with each other,"a hollow spiral conveying blade in each of said channels,mechanism for imparting reverse rotation to'said conveying'blad'esfia cutting chamber into which said channels open','-cutting' mechanism composed of a plurality of rotatable, radially-disposed; separated cutting blades within said cutting chamber, a stripper within'said chamber with the teeth of which the blades'coeperate, and means for occasioning the rotation of said cutting blades.

i csaeov 6. A cutting machine, which comprises in combination acasing formed with "two parallel feed channels communicating with each I other, a 'hollow spiral conveying blade in-each of said channels,.mechanism for imparting reverse rotation to said'conveying blades,-a cutting chamber into which said channels open, a door for inclosing the exterior of said cutting chamber having means for locking it intoandunlocking 1t from closed position,-rotary cutting blades within said cutting chamber,--and a stripper within said chamber with which said blades coeperate.

'7.- A cuttingmachine, which comprises in conveying blades,' a cutting chamberat one I end of said channels intowhich they both open, a door for closing the exterior of said cutting chamber having means for locking it into and unlocking it from closed position,-'rotarycutting b-lades within said cuttingchamber,-and a stripper Within said chamber withwhich said blades cooperate. 8. A cutting machine'in which are com bined:'a casing'formed with two parallel feed channels which communicate with each other,-a hollow spiral conveying blade within each of said channels, having an inturned inner end,a driven stud shaft with which the inturned end of said blade is'detachably connected,mechanism for imparting rotation to said stud shaft,a cutting chamber into which said channels open,'a toothed str'ipper,rotary cutting blades within said cutting chamber,and means for occasioning the rotation of said cutting blades. 9. A cutting machine in which are combined:a casing formed with two parallel feed channels the bottoms of which are semi cylindric which communicate with each other and one of which is provided with a discharge opening adapted to be opened and closed','a hollow spiral conveying blade within, each of said channels,mechanism apertured andthe apertures formed with notches mounted upon said shaft, spacing devices between said blades, a pin-provided boss or head detachably connected with the driving shaft and the pins of which pass through notches in the cutting blades,and

means for detachably locking said blades and communicationbetween the two channels,

a discharge opening out of one of said feed channels,a door for closing said discharge opening having means for looking it into and unlocking it from closed position,-a hollow spiral conveying blade within each of said channels,-mechanism for imparting reverse rotation to said conveying blades,-a cutting chamber into which said channels open, and rotary cutting blades within said cuttingchamber.

12. A casing for a cutting machine, which comprises in combination :a plurality of parallel, longitudinally-extending feed channels the bottoms of which are semi-cylindric and which communicate with each other, a plurality of hollow spiral conveying blades one in each of the channels,-means for rotating said spiral blades in reverse directions within said channels,-and connecting means between corresponding ends of said blades and said means for rotating them.

13. A casing for a cutting machine, which comprises in combination :a plurality of parallel, longitudinally-extending feed channels the bottoms of which are semi-cylindric and which communicate with each other,-a plurality of hollow spiral conveying blades one in each of the channels,means for rotating said blades in reverse directions with in said channels,connecting means between corresponding ends of said blades and said means for rotating them,a cutting chamber into which said channels open,cutting mechanism within said cutting 'chamber, and means for occasioning the operation of said cutting mechanism.

CHARLES W. HOTTMANN.

Witnesses:

J. BONSALL TAYLOR, O. D. MGVAY.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. 0. 

